SU1390606A2 - D.c. voltage pulsed regulator - Google Patents

Abstract

The invention relates to electrical engineering and can be used to power various electronic radio devices. The purpose of the invention is the expansion of the adjustment range. This is achieved by introducing a second winding 4 filter throttles 2 of the filter connected between the input terminal and the power output of the regulating element 1. Both windings 3 and 4 drossel 2 included according to. The stabilizer also contains a filter capacitor 5 and a measuring element 6 connected to the output terminals, a pulse duration modulator 7, the input of which is connected to the output of the measuring element 6, and the output to the control input of the regulating element 1, the capacitor 8 and the first 9 and second 10 diodes. 1 il.

Description

The invention relates to electrical engineering, can be used to power electrical equipment, and is an improvement in the design standard. ev No. 1073 760.

The purpose of the invention is to expand the range of regulation.

The drawing shows a circuit of a DC voltage regulator.

The stabilizer contains a regulating element 1, a filter choke 2, having two windings 3 and 4 connected by one output of the first winding 3 to one power output of the regulating element 1, and the other output to the output output of the stabilizer. The second winding-4 filter throttles 2 is connected between the input terminal and another power output of the regulating element 1 according to the first winding 3. The filter capacitor 5 and the measuring element 6 are connected in parallel to the stabilizer output terminals. The modulator 7 is the pulse width of the input connected to the output of the measuring element 6, and the output to the control input of the regulating element 1. The capacitor 8 is connected to the common point of the regulating element 1 and the first winding 3 filter throttles 2 and the other end to the common point the cathode of the first diode 9 and the anode of the second diode 10, and the anode of the first diode 9 is connected to a common bus. The cathode of the second diode 10 is connected to the output of the output of the stabilizer,

The stabilizer works as follows.

When regulating element 1 is turned on, a charge current of a capacitor 8 ii flows through it: - input voltage source, second winding 4 droplets 2 filters, regulating element 1, capacitor 8, diode 10, capacitor 5, - input voltage source, A voltage equal to U ,, is applied to the second winding 4 throttles 2.

The charge of the capacitor 8 is charged. When the regulating element 1 is closed, the current of the throttle 2 is closed through the load, the first diode 9 and the capacitor 8,

The following calculations can be evidence of the achievement of the set of sang.

The voltage on the windings 3 and 4 throttles 2 is equal to

and and - Up. (2)

As a result, the increment of throttle current 2 is

ai

and - and,

P

(3)

Where

- the duration of the closed state of the regulating element 1;

L is the inductance of the choke 2. From expression (3) it can be seen that the greater the voltage across the capacitor 8, the less the inductance of the choke 2 is demanded, and hence its dimensions.

The range of admissible values of input voltages can be determined from expression (1):

EM. "C and, - and + Ue

(four)

The voltage on the winding 4 drops 2 is determined by the expression

35

and - -Jk. W

U4 - at W ,,

(five)

where wj w.

the number of turns of the first winding 3 droplets 2; the number of turns of the second winding 4 drops 2, Substitute (5) in the formula (4):

EM.KS and - with

.W + w3.

 W. (6)

45

In the limiting case, the voltage on the capacitor 8 approaches the value of U U, then:

E and max

2Wi + W4

(7)

and E - and

- and.

(one)

where E is the input voltage;

and - output voltage; and. - the voltage across the capacitor 8 In the first winding 3 of the chokes 3, a self-induced emf is induced, under the action of which the additional voltage

In the particular case when W W MOkc Zi, which exceeds the maximum input voltage in the device according to the known stabilizer, where.

By varying the number of turns of W and W, it is possible to provide the necessary range of adjustment in accordance with

313906064

formula (6). Thus, by the fact that, for the purpose of expanding the diaplenny goal, the control zone is reached, in his choke

filter introduced the second winding, including the formula of the invention, chenna in the open circuit between the input

The impulse stabilizer voltage control and the power brood regulate the direct current according to the author. of the common element, both windings

No. 1073760, different droplets included as per.

Claims (1)

The claims, j Switching DC voltage stabilizer according to ed. St. No. 1073760, characterized in that, in order to expand the control range, a second winding is introduced into its filter inductor, included in the open circuit between the input terminal and the power terminal of the control element, both windings of the inductor included according to.